Never get between No. 122 and his dinner — or you might become his dinner.

That’s the large male grizzly bear in Banff National Park who earlier this month ate a black bear.

Officials reopened the the Sundance Canyon area in Banff National Park on Tuesday after they were sure No. 122 had moved on. A group of hikers stumbled upon the giant bear feasting on a carcass earlier in August, which an investigation by park officials revealed to be the remains of a small black bear.

“It had been completely consumed,” Steve Michel, a human wildlife conflict specialist with Banff National Park, told the Calgary Herald. “There was nothing remaining other than a skull, a hide, the four paws and some bones.”

Michel said the grizzly is between 225 and 275 kilograms big, with the black bear weighing in at a puny 45 kilograms. That’s about a six-to-one size difference.

“I don’t think there would have been much of a brawl that took place,” he said. “It would have been fairly quick.”

According to Sun News, it took the grizzly about two days to devour his kill.

Although it may seem out of the ordinary, grizzly bears are known to eat their smaller cousins on occasion. In fact, No. 122 is a serial offender; he was documented eating a black bear around the same time last year.

Above is a video taken in 2012 of a black bear in Alberta avoiding a grizzly by climbing a tree. Colin deBaie, who uploaded the footage to YouTube, said he couldn’t stick around to see the end of the confrontation.

“We watched the poor little black bear hang on for dear life and make a number of attempts to get away,” he wrote. “I had to leave before the end of this encounter and I can only hope the black bear made out okay although his chances did not look good.”

Could it have been No. 122? Who knows. One thing we do need for this killer bear, however, is a better name than a number.